upstream/mercurial-mirror Commit - r30810:df5d3734

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#!/usr/bin/env python

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#!/usr/bin/env python

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#

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#

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# check-code - a style and portability checker for Mercurial

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# check-code - a style and portability checker for Mercurial

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#

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#

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#

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#

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# This software may be used and distributed according to the terms of the

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# This software may be used and distributed according to the terms of the

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# GNU General Public License version 2 or any later version.

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# GNU General Public License version 2 or any later version.

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"""style and portability checker for Mercurial

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"""style and portability checker for Mercurial

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when a rule triggers wrong, do one of the following (prefer one from top):

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when a rule triggers wrong, do one of the following (prefer one from top):

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* do the work-around the rule suggests

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* do the work-around the rule suggests

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* doublecheck that it is a false match

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* doublecheck that it is a false match

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* improve the rule pattern

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* improve the rule pattern

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* add an ignore pattern to the rule (3rd arg) which matches your good line

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* add an ignore pattern to the rule (3rd arg) which matches your good line

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(you can append a short comment and match this, like: #re-raises)

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(you can append a short comment and match this, like: #re-raises)

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* change the pattern to a warning and list the exception in test-check-code-hg

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* change the pattern to a warning and list the exception in test-check-code-hg

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* ONLY use no--check-code for skipping entire files from external sources

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* ONLY use no--check-code for skipping entire files from external sources

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"""

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"""

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from __future__ import absolute_import, print_function

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from __future__ import absolute_import, print_function

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import glob

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import glob

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import keyword

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import keyword

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import optparse

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import optparse

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import os

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import os

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import re

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import re

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import sys

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import sys

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if sys.version_info[0] < 3:

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if sys.version_info[0] < 3:

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opentext = open

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opentext = open

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else:

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else:

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def opentext(f):

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def opentext(f):

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return open(f, encoding='ascii')

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return open(f, encoding='ascii')

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try:

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try:

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xrange

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xrange

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except NameError:

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except NameError:

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xrange = range

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xrange = range

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try:

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try:

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import re2

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import re2

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except ImportError:

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except ImportError:

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re2 = None

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re2 = None

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def compilere(pat, multiline=False):

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def compilere(pat, multiline=False):

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if multiline:

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if multiline:

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pat = '(?m)' + pat

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pat = '(?m)' + pat

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if re2:

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if re2:

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try:

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try:

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return re2.compile(pat)

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return re2.compile(pat)

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except re2.error:

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except re2.error:

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pass

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pass

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return re.compile(pat)

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return re.compile(pat)

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# check "rules depending on implementation of repquote()" in each

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# check "rules depending on implementation of repquote()" in each

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# patterns (especially pypats), before changing around repquote()

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# patterns (especially pypats), before changing around repquote()

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_repquotefixedmap = {' ': ' ', '\n': '\n', '.': 'p', ':': 'q',

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_repquotefixedmap = {' ': ' ', '\n': '\n', '.': 'p', ':': 'q',

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'%': '%', '\\': 'b', '*': 'A', '+': 'P', '-': 'M'}

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'%': '%', '\\': 'b', '*': 'A', '+': 'P', '-': 'M'}

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def _repquoteencodechr(i):

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def _repquoteencodechr(i):

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if i > 255:

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if i > 255:

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return 'u'

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return 'u'

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c = chr(i)

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c = chr(i)

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if c in _repquotefixedmap:

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if c in _repquotefixedmap:

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return _repquotefixedmap[c]

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return _repquotefixedmap[c]

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if c.isalpha():

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if c.isalpha():

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return 'x'

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return 'x'

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if c.isdigit():

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if c.isdigit():

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return 'n'

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return 'n'

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return 'o'

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return 'o'

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_repquotett = ''.join(_repquoteencodechr(i) for i in xrange(256))

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_repquotett = ''.join(_repquoteencodechr(i) for i in xrange(256))

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def repquote(m):

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def repquote(m):

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t = m.group('text')

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t = m.group('text')

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t = t.translate(_repquotett)

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t = t.translate(_repquotett)

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return m.group('quote') + t + m.group('quote')

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return m.group('quote') + t + m.group('quote')

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def reppython(m):

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def reppython(m):

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comment = m.group('comment')

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comment = m.group('comment')

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if comment:

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if comment:

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l = len(comment.rstrip())

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l = len(comment.rstrip())

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return "#" * l + comment[l:]

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return "#" * l + comment[l:]

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return repquote(m)

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return repquote(m)

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def repcomment(m):

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def repcomment(m):

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return m.group(1) + "#" * len(m.group(2))

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return m.group(1) + "#" * len(m.group(2))

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def repccomment(m):

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def repccomment(m):

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t = re.sub(r"((?<=\n) )|\S", "x", m.group(2))

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t = re.sub(r"((?<=\n) )|\S", "x", m.group(2))

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return m.group(1) + t + "*/"

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return m.group(1) + t + "*/"

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def repcallspaces(m):

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def repcallspaces(m):

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t = re.sub(r"\n\s+", "\n", m.group(2))

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t = re.sub(r"\n\s+", "\n", m.group(2))

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return m.group(1) + t

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return m.group(1) + t

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def repinclude(m):

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def repinclude(m):

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return m.group(1) + "<foo>"

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return m.group(1) + "<foo>"

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def rephere(m):

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def rephere(m):

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t = re.sub(r"\S", "x", m.group(2))

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t = re.sub(r"\S", "x", m.group(2))

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return m.group(1) + t

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return m.group(1) + t

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testpats = [

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testpats = [

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[

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[

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(r'pushd|popd', "don't use 'pushd' or 'popd', use 'cd'"),

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(r'pushd|popd', "don't use 'pushd' or 'popd', use 'cd'"),

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(r'\W\$?$\([^$\n]*\)\)', "don't use (()) or $(()), use 'expr'"),

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(r'\W\$?$\([^$\n]*\)\)', "don't use (()) or $(()), use 'expr'"),

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(r'grep.*-q', "don't use 'grep -q', redirect to /dev/null"),

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(r'grep.*-q', "don't use 'grep -q', redirect to /dev/null"),

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(r'(?<!hg )grep.* -a', "don't use 'grep -a', use in-line python"),

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(r'(?<!hg )grep.* -a', "don't use 'grep -a', use in-line python"),

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(r'sed.*-i', "don't use 'sed -i', use a temporary file"),

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(r'sed.*-i', "don't use 'sed -i', use a temporary file"),

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(r'\becho\b.*\\n', "don't use 'echo \\n', use printf"),

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(r'\becho\b.*\\n', "don't use 'echo \\n', use printf"),

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(r'echo -n', "don't use 'echo -n', use printf"),

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(r'echo -n', "don't use 'echo -n', use printf"),

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(r'(^|\|\s*)\bwc\b[^|]*$\n(?!.*$re$)', "filter wc output"),

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(r'(^|\|\s*)\bwc\b[^|]*$\n(?!.*$re$)', "filter wc output"),

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(r'head -c', "don't use 'head -c', use 'dd'"),

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(r'head -c', "don't use 'head -c', use 'dd'"),

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(r'tail -n', "don't use the '-n' option to tail, just use '-<num>'"),

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(r'tail -n', "don't use the '-n' option to tail, just use '-<num>'"),

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(r'sha1sum', "don't use sha1sum, use $TESTDIR/md5sum.py"),

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(r'sha1sum', "don't use sha1sum, use $TESTDIR/md5sum.py"),

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(r'ls.*-\w*R', "don't use 'ls -R', use 'find'"),

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(r'ls.*-\w*R', "don't use 'ls -R', use 'find'"),

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(r'printf.*[^\\]\\([1-9]|0\d)', r"don't use 'printf \NNN', use Python"),

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(r'printf.*[^\\]\\([1-9]|0\d)', r"don't use 'printf \NNN', use Python"),

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(r'printf.*[^\\]\\x', "don't use printf \\x, use Python"),

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(r'printf.*[^\\]\\x', "don't use printf \\x, use Python"),

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(r'\$$.*$', "don't use $(expr), use `expr`"),

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(r'\$$.*$', "don't use $(expr), use `expr`"),

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(r'rm -rf \*', "don't use naked rm -rf, target a directory"),

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(r'rm -rf \*', "don't use naked rm -rf, target a directory"),

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(r'(^|\|\s*)grep (-\w\s+)*[^|]*[(|]\w',

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(r'(^|\|\s*)grep (-\w\s+)*[^|]*[(|]\w',

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"use egrep for extended grep syntax"),

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"use egrep for extended grep syntax"),

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(r'/bin/', "don't use explicit paths for tools"),

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(r'/bin/', "don't use explicit paths for tools"),

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(r'[^\n]\Z', "no trailing newline"),

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(r'[^\n]\Z', "no trailing newline"),

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(r'export .*=', "don't export and assign at once"),

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(r'export .*=', "don't export and assign at once"),

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(r'^source\b', "don't use 'source', use '.'"),

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(r'^source\b', "don't use 'source', use '.'"),

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(r'touch -d', "don't use 'touch -d', use 'touch -t' instead"),

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(r'touch -d', "don't use 'touch -d', use 'touch -t' instead"),

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(r'\bls +[^|\n-]+ +-', "options to 'ls' must come before filenames"),

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(r'\bls +[^|\n-]+ +-', "options to 'ls' must come before filenames"),

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(r'[^>\n]>\s*\$HGRCPATH', "don't overwrite $HGRCPATH, append to it"),

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(r'[^>\n]>\s*\$HGRCPATH', "don't overwrite $HGRCPATH, append to it"),

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(r'^stop', "don't use 'stop' as a shell function name"),

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(r'^stop', "don't use 'stop' as a shell function name"),

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(r'(\[|\btest\b).*-e ', "don't use 'test -e', use 'test -f'"),

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(r'(\[|\btest\b).*-e ', "don't use 'test -e', use 'test -f'"),

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(r'\[\[\s+[^\]]*\]\]', "don't use '[[ ]]', use '[ ]'"),

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(r'\[\[\s+[^\]]*\]\]', "don't use '[[ ]]', use '[ ]'"),

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(r'^alias\b.*=', "don't use alias, use a function"),

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(r'^alias\b.*=', "don't use alias, use a function"),

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(r'if\s*!', "don't use '!' to negate exit status"),

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(r'if\s*!', "don't use '!' to negate exit status"),

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(r'/dev/u?random', "don't use entropy, use /dev/zero"),

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(r'/dev/u?random', "don't use entropy, use /dev/zero"),

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(r'do\s*true;\s*done', "don't use true as loop body, use sleep 0"),

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(r'do\s*true;\s*done', "don't use true as loop body, use sleep 0"),

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(r'^( *)\t', "don't use tabs to indent"),

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(r'^( *)\t', "don't use tabs to indent"),

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(r'sed (-e )?\'(\d+|/[^/]*/)i(?!\\\n)',

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(r'sed (-e )?\'(\d+|/[^/]*/)i(?!\\\n)',

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"put a backslash-escaped newline after sed 'i' command"),

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"put a backslash-escaped newline after sed 'i' command"),

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(r'^diff *-\w*[uU].*$\n(^ \$ |^$)', "prefix diff -u/-U with cmp"),

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(r'^diff *-\w*[uU].*$\n(^ \$ |^$)', "prefix diff -u/-U with cmp"),

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(r'^\s+(if)? diff *-\w*[uU]', "prefix diff -u/-U with cmp"),

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(r'^\s+(if)? diff *-\w*[uU]', "prefix diff -u/-U with cmp"),

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(r'seq ', "don't use 'seq', use $TESTDIR/seq.py"),

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(r'seq ', "don't use 'seq', use $TESTDIR/seq.py"),

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(r'\butil\.Abort\b', "directly use error.Abort"),

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(r'\butil\.Abort\b', "directly use error.Abort"),

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(r'\|&', "don't use |&, use 2>&1"),

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(r'\|&', "don't use |&, use 2>&1"),

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(r'\w = +\w', "only one space after = allowed"),

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(r'\w = +\w', "only one space after = allowed"),

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(r'\bsed\b.*[^\\]\\n', "don't use 'sed ... \\n', use a \\ and a newline"),

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(r'\bsed\b.*[^\\]\\n', "don't use 'sed ... \\n', use a \\ and a newline"),

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(r'env.*-u', "don't use 'env -u VAR', use 'unset VAR'"),

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(r'env.*-u', "don't use 'env -u VAR', use 'unset VAR'"),

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(r'cp.* -r ', "don't use 'cp -r', use 'cp -R'"),

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(r'cp.* -r ', "don't use 'cp -r', use 'cp -R'"),

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],

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],

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# warnings

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# warnings

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[

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[

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(r'^function', "don't use 'function', use old style"),

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(r'^function', "don't use 'function', use old style"),

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(r'^diff.*-\w*N', "don't use 'diff -N'"),

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(r'^diff.*-\w*N', "don't use 'diff -N'"),

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(r'\$PWD|\${PWD}', "don't use $PWD, use `pwd`"),

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(r'\$PWD|\${PWD}', "don't use $PWD, use `pwd`"),

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(r'^([^"\'\n]|("[^"\n]*")|(\'[^\'\n]*\'))*\^', "^ must be quoted"),

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(r'^([^"\'\n]|("[^"\n]*")|(\'[^\'\n]*\'))*\^', "^ must be quoted"),

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(r'kill (`|\$\()', "don't use kill, use killdaemons.py")

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(r'kill (`|\$\()', "don't use kill, use killdaemons.py")

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]

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]

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]

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]

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testfilters = [

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testfilters = [

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(r"( *)(#([^\n]*\S)?)", repcomment),

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(r"( *)(#([^\n]*\S)?)", repcomment),

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(r"<<(\S+)((.|\n)*?\n\1)", rephere),

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(r"<<(\S+)((.|\n)*?\n\1)", rephere),

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]

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]

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winglobmsg = "use (glob) to match Windows paths too"

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winglobmsg = "use (glob) to match Windows paths too"

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uprefix = r"^ \$ "

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uprefix = r"^ \$ "

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utestpats = [

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utestpats = [

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[

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[

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(r'^(\S.*|| [$>] \S.*)[ \t]\n', "trailing whitespace on non-output"),

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(r'^(\S.*|| [$>] \S.*)[ \t]\n', "trailing whitespace on non-output"),

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(uprefix + r'.*\|\s*sed[^|>\n]*\n',

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(uprefix + r'.*\|\s*sed[^|>\n]*\n',

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"use regex test output patterns instead of sed"),

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"use regex test output patterns instead of sed"),

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(uprefix + r'(true|exit 0)', "explicit zero exit unnecessary"),

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(uprefix + r'(true|exit 0)', "explicit zero exit unnecessary"),

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(uprefix + r'.*(?<!\[)\$\?', "explicit exit code checks unnecessary"),

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(uprefix + r'.*(?<!\[)\$\?', "explicit exit code checks unnecessary"),

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(uprefix + r'.*\|\| echo.*(fail|error)',

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(uprefix + r'.*\|\| echo.*(fail|error)',

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"explicit exit code checks unnecessary"),

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"explicit exit code checks unnecessary"),

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(uprefix + r'set -e', "don't use set -e"),

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(uprefix + r'set -e', "don't use set -e"),

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(uprefix + r'(\s|fi\b|done\b)', "use > for continued lines"),

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(uprefix + r'(\s|fi\b|done\b)', "use > for continued lines"),

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(uprefix + r'.*:\.\S*/', "x:.y in a path does not work on msys, rewrite "

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(uprefix + r'.*:\.\S*/', "x:.y in a path does not work on msys, rewrite "

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"as x://.y, or see `hg log -k msys` for alternatives", r'-\S+:\.|' #-Rxxx

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"as x://.y, or see `hg log -k msys` for alternatives", r'-\S+:\.|' #-Rxxx

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'# no-msys'), # in test-pull.t which is skipped on windows

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'# no-msys'), # in test-pull.t which is skipped on windows

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(r'^ saved backup bundle to \$TESTTMP.*\.hg$', winglobmsg),

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(r'^ saved backup bundle to \$TESTTMP.*\.hg$', winglobmsg),

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(r'^ changeset .* references (corrupted|missing) \$TESTTMP/.*[^)]$',

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(r'^ changeset .* references (corrupted|missing) \$TESTTMP/.*[^)]$',

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winglobmsg),

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winglobmsg),

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(r'^ pulling from \$TESTTMP/.*[^)]$', winglobmsg,

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(r'^ pulling from \$TESTTMP/.*[^)]$', winglobmsg,

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'\$TESTTMP/unix-repo$'), # in test-issue1802.t which skipped on windows

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'\$TESTTMP/unix-repo$'), # in test-issue1802.t which skipped on windows

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(r'^ reverting (?!subrepo ).*/.*[^)]$', winglobmsg),

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(r'^ reverting (?!subrepo ).*/.*[^)]$', winglobmsg),

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(r'^ cloning subrepo \S+/.*[^)]$', winglobmsg),

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(r'^ cloning subrepo \S+/.*[^)]$', winglobmsg),

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(r'^ pushing to \$TESTTMP/.*[^)]$', winglobmsg),

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(r'^ pushing to \$TESTTMP/.*[^)]$', winglobmsg),

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(r'^ pushing subrepo \S+/\S+ to.*[^)]$', winglobmsg),

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(r'^ pushing subrepo \S+/\S+ to.*[^)]$', winglobmsg),

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(r'^ moving \S+/.*[^)]$', winglobmsg),

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(r'^ moving \S+/.*[^)]$', winglobmsg),

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(r'^ no changes made to subrepo since.*/.*[^)]$', winglobmsg),

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(r'^ no changes made to subrepo since.*/.*[^)]$', winglobmsg),

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(r'^ .*: largefile \S+ not available from file:.*/.*[^)]$', winglobmsg),

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(r'^ .*: largefile \S+ not available from file:.*/.*[^)]$', winglobmsg),

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(r'^ .*file://\$TESTTMP',

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(r'^ .*file://\$TESTTMP',

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'write "file:/*/$TESTTMP" + (glob) to match on windows too'),

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'write "file:/*/$TESTTMP" + (glob) to match on windows too'),

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(r'^ [^$>].*27\.0\.0\.1.*[^)]$',

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(r'^ [^$>].*27\.0\.0\.1.*[^)]$',

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'use (glob) to match localhost IP on hosts without 127.0.0.1 too'),

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'use (glob) to match localhost IP on hosts without 127.0.0.1 too'),

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(r'^ (cat|find): .*: No such file or directory',

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(r'^ (cat|find): .*: No such file or directory',

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'use test -f to test for file existence'),

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'use test -f to test for file existence'),

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(r'^ diff -[^ -]*p',

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(r'^ diff -[^ -]*p',

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"don't use (external) diff with -p for portability"),

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"don't use (external) diff with -p for portability"),

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(r'^ [-+][-+][-+] .* [-+]0000 $glob$',

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(r'^ [-+][-+][-+] .* [-+]0000 $glob$',

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"glob timezone field in diff output for portability"),

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"glob timezone field in diff output for portability"),

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(r'^ @@ -[0-9]+ [+][0-9]+,[0-9]+ @@',

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(r'^ @@ -[0-9]+ [+][0-9]+,[0-9]+ @@',

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"use '@@ -N* +N,n @@ (glob)' style chunk header for portability"),

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"use '@@ -N* +N,n @@ (glob)' style chunk header for portability"),

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(r'^ @@ -[0-9]+,[0-9]+ [+][0-9]+ @@',

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(r'^ @@ -[0-9]+,[0-9]+ [+][0-9]+ @@',

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"use '@@ -N,n +N* @@ (glob)' style chunk header for portability"),

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"use '@@ -N,n +N* @@ (glob)' style chunk header for portability"),

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(r'^ @@ -[0-9]+ [+][0-9]+ @@',

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(r'^ @@ -[0-9]+ [+][0-9]+ @@',

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"use '@@ -N* +N* @@ (glob)' style chunk header for portability"),

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"use '@@ -N* +N* @@ (glob)' style chunk header for portability"),

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(uprefix + r'hg( +-[^ ]+( +[^ ]+)?)* +extdiff'

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(uprefix + r'hg( +-[^ ]+( +[^ ]+)?)* +extdiff'

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r'( +(-[^ po-]+|--(?!program|option)[^ ]+|[^-][^ ]*))*$',

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r'( +(-[^ po-]+|--(?!program|option)[^ ]+|[^-][^ ]*))*$',

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"use $RUNTESTDIR/pdiff via extdiff (or -o/-p for false-positives)"),

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"use $RUNTESTDIR/pdiff via extdiff (or -o/-p for false-positives)"),

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],

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],

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# warnings

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# warnings

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[

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[

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(r'^ (?!.*127\.0\.0\.1)[^*?/\n]* $glob$$',

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(r'^ (?!.*127\.0\.0\.1)[^*?/\n]* $glob$$',

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"glob match with no glob string (?, *, /, and 127.0.0.1)"),

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"glob match with no glob string (?, *, /, and 127.0.0.1)"),

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]

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]

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]

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]

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for i in [0, 1]:

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for i in [0, 1]:

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for tp in testpats[i]:

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for tp in testpats[i]:

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p = tp[0]

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p = tp[0]

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m = tp[1]

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m = tp[1]

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if p.startswith(r'^'):

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if p.startswith(r'^'):

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p = r"^ [$>] (%s)" % p[1:]

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p = r"^ [$>] (%s)" % p[1:]

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else:

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else:

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p = r"^ [$>] .*(%s)" % p

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p = r"^ [$>] .*(%s)" % p

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utestpats[i].append((p, m) + tp[2:])

226

utestpats[i].append((p, m) + tp[2:])

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utestfilters = [

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utestfilters = [

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(r"<<(\S+)((.|\n)*?\n > \1)", rephere),

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(r"<<(\S+)((.|\n)*?\n > \1)", rephere),

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(r"( +)(#([^\n]*\S)?)", repcomment),

230

(r"( +)(#([^\n]*\S)?)", repcomment),

231

]

231

]

232

233

pypats = [

233

pypats = [

234

[

234

[

235

(r'^\s*def\s*\w+\s*\(.*,\s*\(',

235

(r'^\s*def\s*\w+\s*\(.*,\s*\(',

236

"tuple parameter unpacking not available in Python 3+"),

236

"tuple parameter unpacking not available in Python 3+"),

237

(r'lambda\s*$.*,.*$',

237

(r'lambda\s*$.*,.*$',

238

"tuple parameter unpacking not available in Python 3+"),

238

"tuple parameter unpacking not available in Python 3+"),

239

(r'(?<!def)\s+(cmp)\(', "cmp is not available in Python 3+"),

239

(r'(?<!def)\s+(cmp)\(', "cmp is not available in Python 3+"),

240

(r'\breduce\s*\(.*', "reduce is not available in Python 3+"),

240

(r'\breduce\s*\(.*', "reduce is not available in Python 3+"),

241

(r'\bdict\(.*=', 'dict() is different in Py2 and 3 and is slower than {}',

241

(r'\bdict\(.*=', 'dict() is different in Py2 and 3 and is slower than {}',

242

'dict-from-generator'),

242

'dict-from-generator'),

243

(r'\.has_key\b', "dict.has_key is not available in Python 3+"),

243

(r'\.has_key\b', "dict.has_key is not available in Python 3+"),

244

(r'\s<>\s', '<> operator is not available in Python 3+, use !='),

244

(r'\s<>\s', '<> operator is not available in Python 3+, use !='),

245

(r'^\s*\t', "don't use tabs"),

245

(r'^\s*\t', "don't use tabs"),

246

(r'\S;\s*\n', "semicolon"),

246

(r'\S;\s*\n', "semicolon"),

247

(r'[^_]_\([ \t\n]*(?:"[^"]+"[ \t\n+]*)+%', "don't use % inside _()"),

247

(r'[^_]_\([ \t\n]*(?:"[^"]+"[ \t\n+]*)+%', "don't use % inside _()"),

248

(r"[^_]_\([ \t\n]*(?:'[^']+'[ \t\n+]*)+%", "don't use % inside _()"),

248

(r"[^_]_\([ \t\n]*(?:'[^']+'[ \t\n+]*)+%", "don't use % inside _()"),

249

(r'(\w|\)),\w', "missing whitespace after ,"),

249

(r'(\w|\)),\w', "missing whitespace after ,"),

250

(r'(\w|\))[+/*\-<>]\w', "missing whitespace in expression"),

250

(r'(\w|\))[+/*\-<>]\w', "missing whitespace in expression"),

251

(r'^\s+(\w|\.)+=\w[^,()\n]*$', "missing whitespace in assignment"),

251

(r'^\s+(\w|\.)+=\w[^,()\n]*$', "missing whitespace in assignment"),

252

(r'\w\s=\s\s+\w', "gratuitous whitespace after ="),

252

(r'\w\s=\s\s+\w', "gratuitous whitespace after ="),

253

(r'.{81}', "line too long"),

253

(r'.{81}', "line too long"),

254

(r'[^\n]\Z', "no trailing newline"),

254

(r'[^\n]\Z', "no trailing newline"),

255

(r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),

255

(r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),

256

# (r'^\s+[^_ \n][^_. \n]+_[^_\n]+\s*=',

256

# (r'^\s+[^_ \n][^_. \n]+_[^_\n]+\s*=',

257

# "don't use underbars in identifiers"),

257

# "don't use underbars in identifiers"),

258

(r'^\s+(self\.)?[A-za-z][a-z0-9]+[A-Z]\w* = ',

258

(r'^\s+(self\.)?[A-za-z][a-z0-9]+[A-Z]\w* = ',

259

"don't use camelcase in identifiers"),

259

"don't use camelcase in identifiers"),

260

260

261

"linebreak after :"),

261

"linebreak after :"),

262

(r'class\s[^( \n]+:', "old-style class, use class foo(object)",

262

(r'class\s[^( \n]+:', "old-style class, use class foo(object)",

263

r'#.*old-style'),

263

r'#.*old-style'),

264

(r'class\s[^( \n]+:',

264

(r'class\s[^( \n]+:',

265

"class foo() creates old style object, use class foo(object)",

265

"class foo() creates old style object, use class foo(object)",

266

r'#.*old-style'),

266

r'#.*old-style'),

267

(r'\b(%s)\(' % '|'.join(k for k in keyword.kwlist

267

(r'\b(%s)\(' % '|'.join(k for k in keyword.kwlist

268

if k not in ('print', 'exec')),

268

if k not in ('print', 'exec')),

269

"Python keyword is not a function"),

269

"Python keyword is not a function"),

270

(r',]', "unneeded trailing ',' in list"),

270

(r',]', "unneeded trailing ',' in list"),

271

# (r'class\s[A-Z][^\(]*\((?!Exception)',

271

# (r'class\s[A-Z][^\(]*\((?!Exception)',

272

# "don't capitalize non-exception classes"),

272

# "don't capitalize non-exception classes"),

273

# (r'in range\(', "use xrange"),

273

# (r'in range\(', "use xrange"),

274

# (r'^\s*print\s+', "avoid using print in core and extensions"),

274

# (r'^\s*print\s+', "avoid using print in core and extensions"),

275

(r'[\x80-\xff]', "non-ASCII character literal"),

275

(r'[\x80-\xff]', "non-ASCII character literal"),

276

(r'("\')\.format\(', "str.format() has no bytes counterpart, use %"),

276

(r'("\')\.format\(', "str.format() has no bytes counterpart, use %"),

277

(r'^\s*(%s)\s\s' % '|'.join(keyword.kwlist),

277

(r'^\s*(%s)\s\s' % '|'.join(keyword.kwlist),

278

"gratuitous whitespace after Python keyword"),

278

"gratuitous whitespace after Python keyword"),

279

(r'([$\[][ \t]\S)|(\S[ \t][$\]])', "gratuitous whitespace in () or []"),

279

(r'([$\[][ \t]\S)|(\S[ \t][$\]])', "gratuitous whitespace in () or []"),

280

# (r'\s\s=', "gratuitous whitespace before ="),

280

# (r'\s\s=', "gratuitous whitespace before ="),

281

(r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',

281

(r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',

282

"missing whitespace around operator"),

282

"missing whitespace around operator"),

283

(r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\s',

283

(r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\s',

284

"missing whitespace around operator"),

284

"missing whitespace around operator"),

285

(r'\s(\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',

285

(r'\s(\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',

286

"missing whitespace around operator"),

286

"missing whitespace around operator"),

287

(r'[^^+=*/!<>&| %-](\s=|=\s)[^= ]',

287

(r'[^^+=*/!<>&| %-](\s=|=\s)[^= ]',

288

"wrong whitespace around ="),

288

"wrong whitespace around ="),

289

(r'\([^()]*( =[^=]|[^<>!=]= )',

289

(r'\([^()]*( =[^=]|[^<>!=]= )',

290

"no whitespace around = for named parameters"),

290

"no whitespace around = for named parameters"),

291

(r'raise Exception', "don't raise generic exceptions"),

291

(r'raise Exception', "don't raise generic exceptions"),

292

(r'raise [^,(]+, ($[^$]+\)|[^,]+)$',

292

(r'raise [^,(]+, ($[^$]+\)|[^,]+)$',

293

"don't use old-style two-argument raise, use Exception(message)"),

293

"don't use old-style two-argument raise, use Exception(message)"),

294

(r' is\s+(not\s+)?["\'0-9-]', "object comparison with literal"),

294

(r' is\s+(not\s+)?["\'0-9-]', "object comparison with literal"),

295

(r' [=!]=\s+(True|False|None)',

295

(r' [=!]=\s+(True|False|None)',

296

"comparison with singleton, use 'is' or 'is not' instead"),

296

"comparison with singleton, use 'is' or 'is not' instead"),

297

(r'^\s*(while|if) [01]:',

297

(r'^\s*(while|if) [01]:',

298

"use True/False for constant Boolean expression"),

298

"use True/False for constant Boolean expression"),

299

(r'(?:(?<!def)\s+|\()hasattr\(',

299

(r'(?:(?<!def)\s+|\()hasattr\(',

300

'hasattr(foo, bar) is broken, use util.safehasattr(foo, bar) instead'),

300

'hasattr(foo, bar) is broken, use util.safehasattr(foo, bar) instead'),

301

(r'opener$[^)]*$.read\(',

301

(r'opener$[^)]*$.read\(',

302

"use opener.read() instead"),

302

"use opener.read() instead"),

303

(r'opener$[^)]*$.write\(',

303

(r'opener$[^)]*$.write\(',

304

"use opener.write() instead"),

304

"use opener.write() instead"),

305

(r'[\s$](open|file)\([^)]*$\.read\(',

305

(r'[\s$](open|file)\([^)]*$\.read\(',

306

"use util.readfile() instead"),

306

"use util.readfile() instead"),

307

(r'[\s$](open|file)\([^)]*$\.write\(',

307

(r'[\s$](open|file)\([^)]*$\.write\(',

308

"use util.writefile() instead"),

308

"use util.writefile() instead"),

309

(r'^[\s$]*(open(er)?|file)\([^)]*$',

309

(r'^[\s$]*(open(er)?|file)\([^)]*$',

310

"always assign an opened file to a variable, and close it afterwards"),

310

"always assign an opened file to a variable, and close it afterwards"),

311

(r'[\s$](open|file)\([^)]*$\.',

311

(r'[\s$](open|file)\([^)]*$\.',

312

"always assign an opened file to a variable, and close it afterwards"),

312

"always assign an opened file to a variable, and close it afterwards"),

313

(r'(?i)descend[e]nt', "the proper spelling is descendAnt"),

313

(r'(?i)descend[e]nt', "the proper spelling is descendAnt"),

314

(r'\.debug\(\_', "don't mark debug messages for translation"),

314

(r'\.debug\(\_', "don't mark debug messages for translation"),

315

(r'\.strip\.split', "no need to strip before splitting"),

315

(r'\.strip\.split', "no need to strip before splitting"),

316

(r'^\s*except\s*:', "naked except clause", r'#.*re-raises'),

316

(r'^\s*except\s*:', "naked except clause", r'#.*re-raises'),

317

(r'^\s*except\s([^$,]+|\([^$]+\))\s*,',

317

(r'^\s*except\s([^$,]+|\([^$]+\))\s*,',

318

'legacy exception syntax; use "as" instead of ","'),

318

'legacy exception syntax; use "as" instead of ","'),

319

(r':\n( )*( ){1,3}[^ ]', "must indent 4 spaces"),

319

(r':\n( )*( ){1,3}[^ ]', "must indent 4 spaces"),

320

(r'release$.*wlock, .*lock$', "wrong lock release order"),

320

(r'release$.*wlock, .*lock$', "wrong lock release order"),

321

(r'\b__bool__\b', "__bool__ should be __nonzero__ in Python 2"),

321

(r'\b__bool__\b', "__bool__ should be __nonzero__ in Python 2"),

322

(r'os\.path\.join$.*, *(""|\'\')$',

322

(r'os\.path\.join$.*, *(""|\'\')$',

323

"use pathutil.normasprefix(path) instead of os.path.join(path, '')"),

323

"use pathutil.normasprefix(path) instead of os.path.join(path, '')"),

324

(r'\s0[0-7]+\b', 'legacy octal syntax; use "0o" prefix instead of "0"'),

324

(r'\s0[0-7]+\b', 'legacy octal syntax; use "0o" prefix instead of "0"'),

325

# XXX only catch mutable arguments on the first line of the definition

325

# XXX only catch mutable arguments on the first line of the definition

326

(r'def.*[( ]\w+=\{\}', "don't use mutable default arguments"),

326

(r'def.*[( ]\w+=\{\}', "don't use mutable default arguments"),

327

(r'\butil\.Abort\b', "directly use error.Abort"),

327

(r'\butil\.Abort\b', "directly use error.Abort"),

328

(r'^@(\w*\.)?cachefunc', "module-level @cachefunc is risky, please avoid"),

328

(r'^import Queue', "don't use Queue, use util.queue + util.empty"),

329

(r'^import Queue', "don't use Queue, use util.queue + util.empty"),

329

(r'^import cStringIO', "don't use cStringIO.StringIO, use util.stringio"),

330

(r'^import cStringIO', "don't use cStringIO.StringIO, use util.stringio"),

330

(r'^import urllib', "don't use urllib, use util.urlreq/util.urlerr"),

331

(r'^import urllib', "don't use urllib, use util.urlreq/util.urlerr"),

331

(r'^import SocketServer', "don't use SockerServer, use util.socketserver"),

332

(r'^import SocketServer', "don't use SockerServer, use util.socketserver"),

332

(r'^import urlparse', "don't use urlparse, use util.urlparse"),

333

(r'^import urlparse', "don't use urlparse, use util.urlparse"),

333

(r'^import xmlrpclib', "don't use xmlrpclib, use util.xmlrpclib"),

334

(r'^import xmlrpclib', "don't use xmlrpclib, use util.xmlrpclib"),

334

(r'^import cPickle', "don't use cPickle, use util.pickle"),

335

(r'^import cPickle', "don't use cPickle, use util.pickle"),

335

(r'^import pickle', "don't use pickle, use util.pickle"),

336

(r'^import pickle', "don't use pickle, use util.pickle"),

336

(r'^import httplib', "don't use httplib, use util.httplib"),

337

(r'^import httplib', "don't use httplib, use util.httplib"),

337

(r'^import BaseHTTPServer', "use util.httpserver instead"),

338

(r'^import BaseHTTPServer', "use util.httpserver instead"),

338

(r'\.next', "don't use .next(), use next(...)"),

339

(r'\.next', "don't use .next(), use next(...)"),

339

340

# rules depending on implementation of repquote()

341

# rules depending on implementation of repquote()

341

(r' x+[xpqo%APM][\'"]\n\s+[\'"]x',

342

(r' x+[xpqo%APM][\'"]\n\s+[\'"]x',

342

'string join across lines with no space'),

343

'string join across lines with no space'),

343

(r'''(?x)ui\.(status|progress|write|note|warn)\(

344

(r'''(?x)ui\.(status|progress|write|note|warn)\(

344

[ \t\n#]*

345

[ \t\n#]*

345

(?# any strings/comments might precede a string, which

346

(?# any strings/comments might precede a string, which

346

# contains translatable message)

347

# contains translatable message)

347

((['"]|\'\'\'|""")[ \npq%bAPMxno]*(['"]|\'\'\'|""")[ \t\n#]+)*

348

((['"]|\'\'\'|""")[ \npq%bAPMxno]*(['"]|\'\'\'|""")[ \t\n#]+)*

348

(?# sequence consisting of below might precede translatable message

349

(?# sequence consisting of below might precede translatable message

349

# - formatting string: "% 10s", "%05d", "% -3.2f", "%*s", "%%" ...

350

# - formatting string: "% 10s", "%05d", "% -3.2f", "%*s", "%%" ...

350

# - escaped character: "\\", "\n", "\0" ...

351

# - escaped character: "\\", "\n", "\0" ...

351

# - character other than '%', 'b' as '\', and 'x' as alphabet)

352

# - character other than '%', 'b' as '\', and 'x' as alphabet)

352

(['"]|\'\'\'|""")

353

(['"]|\'\'\'|""")

353

((%([ n]?[PM]?([np]+|A))?x)|%%|b[bnx]|[ \nnpqAPMo])*x

354

((%([ n]?[PM]?([np]+|A))?x)|%%|b[bnx]|[ \nnpqAPMo])*x

354

(?# this regexp can't use [^...] style,

355

(?# this regexp can't use [^...] style,

355

# because _preparepats forcibly adds "\n" into [^...],

356

# because _preparepats forcibly adds "\n" into [^...],

356

# even though this regexp wants match it against "\n")''',

357

# even though this regexp wants match it against "\n")''',

357

"missing _() in ui message (use () to hide false-positives)"),

358

"missing _() in ui message (use () to hide false-positives)"),

358

],

359

],

359

# warnings

360

# warnings

360

[

361

[

361

# rules depending on implementation of repquote()

362

# rules depending on implementation of repquote()

362

(r'(^| )pp +xxxxqq[ \n][^\n]', "add two newlines after '.. note::'"),

363

(r'(^| )pp +xxxxqq[ \n][^\n]', "add two newlines after '.. note::'"),

363

]

364

]

364

]

365

]

365

366

pyfilters = [

367

pyfilters = [

367

(r"""(?msx)(?P<comment>\#.*?$)|

368

(r"""(?msx)(?P<comment>\#.*?$)|

368

((?P<quote>('''|\"\"\"|(?<!')'(?!')|(?<!")"(?!")))

369

((?P<quote>('''|\"\"\"|(?<!')'(?!')|(?<!")"(?!")))

369

(?P<text>(([^\\]|\\.)*?))

370

(?P<text>(([^\\]|\\.)*?))

370

(?P=quote))""", reppython),

371

(?P=quote))""", reppython),

371

]

372

]

372

373

txtfilters = []

374

txtfilters = []

374

375

txtpats = [

376

txtpats = [

376

[

377

[

377

('\s$', 'trailing whitespace'),

378

('\s$', 'trailing whitespace'),

378

('.. note::[ \n][^\n]', 'add two newlines after note::')

379

('.. note::[ \n][^\n]', 'add two newlines after note::')

379

],

380

],

380

[]

381

[]

381

]

382

]

382

383

cpats = [

384

cpats = [

384

[

385

[

385

(r'//', "don't use //-style comments"),

386

(r'//', "don't use //-style comments"),

386

(r'^ ', "don't use spaces to indent"),

387

(r'^ ', "don't use spaces to indent"),

387

(r'\S\t', "don't use tabs except for indent"),

388

(r'\S\t', "don't use tabs except for indent"),

388

(r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),

389

(r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),

389

(r'.{81}', "line too long"),

390

(r'.{81}', "line too long"),

390

(r'(while|if|do|for)\(', "use space after while/if/do/for"),

391

(r'(while|if|do|for)\(', "use space after while/if/do/for"),

391

(r'return\(', "return is not a function"),

392

(r'return\(', "return is not a function"),

392

(r' ;', "no space before ;"),

393

(r' ;', "no space before ;"),

393

(r'[^;] \)', "no space before )"),

394

(r'[^;] \)', "no space before )"),

394

(r'[)][{]', "space between ) and {"),

395

(r'[)][{]', "space between ) and {"),

395

(r'\w+\* \w+', "use int *foo, not int* foo"),

396

(r'\w+\* \w+', "use int *foo, not int* foo"),

396

(r'\W$[^$]+\) \w+', "use (int)foo, not (int) foo"),

397

(r'\W$[^$]+\) \w+', "use (int)foo, not (int) foo"),

397

(r'\w+ (\+\+|--)', "use foo++, not foo ++"),

398

(r'\w+ (\+\+|--)', "use foo++, not foo ++"),

398

(r'\w,\w', "missing whitespace after ,"),

399

(r'\w,\w', "missing whitespace after ,"),

399

(r'^[^#]\w[+/*]\w', "missing whitespace in expression"),

400

(r'^[^#]\w[+/*]\w', "missing whitespace in expression"),

400

(r'\w\s=\s\s+\w', "gratuitous whitespace after ="),

401

(r'\w\s=\s\s+\w', "gratuitous whitespace after ="),

401

(r'^#\s+\w', "use #foo, not # foo"),

402

(r'^#\s+\w', "use #foo, not # foo"),

402

(r'[^\n]\Z', "no trailing newline"),

403

(r'[^\n]\Z', "no trailing newline"),

403

(r'^\s*#import\b', "use only #include in standard C code"),

404

(r'^\s*#import\b', "use only #include in standard C code"),

404

(r'strcpy\(', "don't use strcpy, use strlcpy or memcpy"),

405

(r'strcpy\(', "don't use strcpy, use strlcpy or memcpy"),

405

(r'strcat\(', "don't use strcat"),

406

(r'strcat\(', "don't use strcat"),

406

407

# rules depending on implementation of repquote()

408

# rules depending on implementation of repquote()

408

],

409

],

409

# warnings

410

# warnings

410

[

411

[

411

# rules depending on implementation of repquote()

412

# rules depending on implementation of repquote()

412

]

413

]

413

]

414

]

414

415

cfilters = [

416

cfilters = [

416

(r'(/\*)(((\*(?!/))|[^*])*)\*/', repccomment),

417

(r'(/\*)(((\*(?!/))|[^*])*)\*/', repccomment),

417

(r'''(?P<quote>(?<!")")(?P<text>([^"]|\\")+)"(?!")''', repquote),

418

(r'''(?P<quote>(?<!")")(?P<text>([^"]|\\")+)"(?!")''', repquote),

418

(r'''(#\s*include\s+<)([^>]+)>''', repinclude),

419

(r'''(#\s*include\s+<)([^>]+)>''', repinclude),

419

(r'($)([^)]+$)', repcallspaces),

420

(r'($)([^)]+$)', repcallspaces),

420

]

421

]

421

422

inutilpats = [

423

inutilpats = [

423

[

424

[

424

(r'\bui\.', "don't use ui in util"),

425

(r'\bui\.', "don't use ui in util"),

425

],

426

],

426

# warnings

427

# warnings

427

[]

428

[]

428

]

429

]

429

430

inrevlogpats = [

431

inrevlogpats = [

431

[

432

[

432

(r'\brepo\.', "don't use repo in revlog"),

433

(r'\brepo\.', "don't use repo in revlog"),

433

],

434

],

434

# warnings

435

# warnings

435

[]

436

[]

436

]

437

]

437

438

webtemplatefilters = []

439

webtemplatefilters = []

439

440

webtemplatepats = [

441

webtemplatepats = [

441

[],

442

[],

442

[

443

[

443

(r'{desc(\|(?!websub|firstline)[^\|]*)+}',

444

(r'{desc(\|(?!websub|firstline)[^\|]*)+}',

444

'follow desc keyword with either firstline or websub'),

445

'follow desc keyword with either firstline or websub'),

445

]

446

]

446

]

447

]

447

448

allfilesfilters = []

449

allfilesfilters = []

449

450

allfilespats = [

451

allfilespats = [

451

[

452

[

452

(r'(http|https)://[a-zA-Z0-9./]*selenic.com/',

453

(r'(http|https)://[a-zA-Z0-9./]*selenic.com/',

453

'use mercurial-scm.org domain URL'),

454

'use mercurial-scm.org domain URL'),

454

],

455

],

455

# warnings

456

# warnings

456

[],

457

[],

457

]

458

]

458

459

py3pats = [

460

py3pats = [

460

[

461

[

461

(r'os\.environ', "use encoding.environ instead (py3)"),

462

(r'os\.environ', "use encoding.environ instead (py3)"),

462

(r'os\.name', "use pycompat.osname instead (py3)"),

463

(r'os\.name', "use pycompat.osname instead (py3)"),

463

(r'os\.getcwd', "use pycompat.getcwd instead (py3)"),

464

(r'os\.getcwd', "use pycompat.getcwd instead (py3)"),

464

(r'os\.sep', "use pycompat.ossep instead (py3)"),

465

(r'os\.sep', "use pycompat.ossep instead (py3)"),

465

(r'os\.pathsep', "use pycompat.ospathsep instead (py3)"),

466

(r'os\.pathsep', "use pycompat.ospathsep instead (py3)"),

466

(r'os\.altsep', "use pycompat.osaltsep instead (py3)"),

467

(r'os\.altsep', "use pycompat.osaltsep instead (py3)"),

467

(r'os\.getenv', "use pycompat.osgetenv instead (py3)"),

468

(r'os\.getenv', "use pycompat.osgetenv instead (py3)"),

468

(r'sys\.platform', "use pycompat.sysplatform instead (py3)"),

469

(r'sys\.platform', "use pycompat.sysplatform instead (py3)"),

469

(r'getopt\.getopt', "use pycompat.getoptb instead (py3)"),

470

(r'getopt\.getopt', "use pycompat.getoptb instead (py3)"),

470

],

471

],

471

# warnings

472

# warnings

472

[],

473

[],

473

]

474

]

474

475

checks = [

476

checks = [

476

('python', r'.*\.(py|cgi)$', r'^#!.*python', pyfilters, pypats),

477

('python', r'.*\.(py|cgi)$', r'^#!.*python', pyfilters, pypats),

477

('python 3', r'.*(hgext|mercurial).*(?<!pycompat)\.py', '',

478

('python 3', r'.*(hgext|mercurial).*(?<!pycompat)\.py', '',

478

pyfilters, py3pats),

479

pyfilters, py3pats),

479

('test script', r'(.*/)?test-[^.~]*$', '', testfilters, testpats),

480

('test script', r'(.*/)?test-[^.~]*$', '', testfilters, testpats),

480

('c', r'.*\.[ch]$', '', cfilters, cpats),

481

('c', r'.*\.[ch]$', '', cfilters, cpats),

481

('unified test', r'.*\.t$', '', utestfilters, utestpats),

482

('unified test', r'.*\.t$', '', utestfilters, utestpats),

482

('layering violation repo in revlog', r'mercurial/revlog\.py', '',

483

('layering violation repo in revlog', r'mercurial/revlog\.py', '',

483

pyfilters, inrevlogpats),

484

pyfilters, inrevlogpats),

484

('layering violation ui in util', r'mercurial/util\.py', '', pyfilters,

485

('layering violation ui in util', r'mercurial/util\.py', '', pyfilters,

485

inutilpats),

486

inutilpats),

486

('txt', r'.*\.txt$', '', txtfilters, txtpats),

487

('txt', r'.*\.txt$', '', txtfilters, txtpats),

487

('web template', r'mercurial/templates/.*\.tmpl', '',

488

('web template', r'mercurial/templates/.*\.tmpl', '',

488

webtemplatefilters, webtemplatepats),

489

webtemplatefilters, webtemplatepats),

489

('all except for .po', r'.*(?<!\.po)$', '',

490

('all except for .po', r'.*(?<!\.po)$', '',

490

allfilesfilters, allfilespats),

491

allfilesfilters, allfilespats),

491

]

492

]

492

493

def _preparepats():

494

def _preparepats():

494

for c in checks:

495

for c in checks:

495

failandwarn = c[-1]

496

failandwarn = c[-1]

496

for pats in failandwarn:

497

for pats in failandwarn:

497

for i, pseq in enumerate(pats):

498

for i, pseq in enumerate(pats):

498

# fix-up regexes for multi-line searches

499

# fix-up regexes for multi-line searches

499

p = pseq[0]

500

p = pseq[0]

500

# \s doesn't match \n

501

# \s doesn't match \n

501

p = re.sub(r'(?<!\\)\\s', r'[ \\t]', p)

502

p = re.sub(r'(?<!\\)\\s', r'[ \\t]', p)

502

# [^...] doesn't match newline

503

# [^...] doesn't match newline

503

p = re.sub(r'(?<!\\)\[\^', r'[^\\n', p)

504

p = re.sub(r'(?<!\\)\[\^', r'[^\\n', p)

504

505

pats[i] = (re.compile(p, re.MULTILINE),) + pseq[1:]

506

pats[i] = (re.compile(p, re.MULTILINE),) + pseq[1:]

506

filters = c[3]

507

filters = c[3]

507

for i, flt in enumerate(filters):

508

for i, flt in enumerate(filters):

508

filters[i] = re.compile(flt[0]), flt[1]

509

filters[i] = re.compile(flt[0]), flt[1]

509

510

class norepeatlogger(object):

511

class norepeatlogger(object):

511

def __init__(self):

512

def __init__(self):

512

self._lastseen = None

513

self._lastseen = None

513

514

def log(self, fname, lineno, line, msg, blame):

515

def log(self, fname, lineno, line, msg, blame):

515

"""print error related a to given line of a given file.

516

"""print error related a to given line of a given file.

516

517

The faulty line will also be printed but only once in the case

518

The faulty line will also be printed but only once in the case

518

of multiple errors.

519

of multiple errors.

519

520

:fname: filename

521

:fname: filename

521

:lineno: line number

522

:lineno: line number

522

:line: actual content of the line

523

:line: actual content of the line

523

:msg: error message

524

:msg: error message

524

"""

525

"""

525

msgid = fname, lineno, line

526

msgid = fname, lineno, line

526

if msgid != self._lastseen:

527

if msgid != self._lastseen:

527

if blame:

528

if blame:

528

print("%s:%d (%s):" % (fname, lineno, blame))

529

print("%s:%d (%s):" % (fname, lineno, blame))

529

else:

530

else:

530

print("%s:%d:" % (fname, lineno))

531

print("%s:%d:" % (fname, lineno))

531

print(" > %s" % line)

532

print(" > %s" % line)

532

self._lastseen = msgid

533

self._lastseen = msgid

533

print(" " + msg)

534

print(" " + msg)

534

535

_defaultlogger = norepeatlogger()

536

_defaultlogger = norepeatlogger()

536

537

def getblame(f):

538

def getblame(f):

538

lines = []

539

lines = []

539

for l in os.popen('hg annotate -un %s' % f):

540

for l in os.popen('hg annotate -un %s' % f):

540

start, line = l.split(':', 1)

541

start, line = l.split(':', 1)

541

user, rev = start.split()

542

user, rev = start.split()

542

lines.append((line[1:-1], user, rev))

543

lines.append((line[1:-1], user, rev))

543

return lines

544

return lines

544

545

def checkfile(f, logfunc=_defaultlogger.log, maxerr=None, warnings=False,

546

def checkfile(f, logfunc=_defaultlogger.log, maxerr=None, warnings=False,

546

blame=False, debug=False, lineno=True):

547

blame=False, debug=False, lineno=True):

547

"""checks style and portability of a given file

548

"""checks style and portability of a given file

548

549

:f: filepath

550

:f: filepath

550

:logfunc: function used to report error

551

:logfunc: function used to report error

551

logfunc(filename, linenumber, linecontent, errormessage)

552

logfunc(filename, linenumber, linecontent, errormessage)

552

:maxerr: number of error to display before aborting.

553

:maxerr: number of error to display before aborting.

553

Set to false (default) to report all errors

554

Set to false (default) to report all errors

554

555

return True if no error is found, False otherwise.

556

return True if no error is found, False otherwise.

556

"""

557

"""

557

blamecache = None

558

blamecache = None

558

result = True

559

result = True

559

560

try:

561

try:

561

with opentext(f) as fp:

562

with opentext(f) as fp:

562

try:

563

try:

563

pre = post = fp.read()

564

pre = post = fp.read()

564

except UnicodeDecodeError as e:

565

except UnicodeDecodeError as e:

565

print("%s while reading %s" % (e, f))

566

print("%s while reading %s" % (e, f))

566

return result

567

return result

567

except IOError as e:

568

except IOError as e:

568

print("Skipping %s, %s" % (f, str(e).split(':', 1)[0]))

569

print("Skipping %s, %s" % (f, str(e).split(':', 1)[0]))

569

return result

570

return result

570

571

for name, match, magic, filters, pats in checks:

572

for name, match, magic, filters, pats in checks:

572

post = pre # discard filtering result of previous check

573

post = pre # discard filtering result of previous check

573

if debug:

574

if debug:

574

print(name, f)

575

print(name, f)

575

fc = 0

576

fc = 0

576

if not (re.match(match, f) or (magic and re.search(magic, pre))):

577

if not (re.match(match, f) or (magic and re.search(magic, pre))):

577

if debug:

578

if debug:

578

print("Skipping %s for %s it doesn't match %s" % (

579

print("Skipping %s for %s it doesn't match %s" % (

579

name, match, f))

580

name, match, f))

580

continue

581

continue

581

if "no-" "check-code" in pre:

582

if "no-" "check-code" in pre:

582

# If you're looking at this line, it's because a file has:

583

# If you're looking at this line, it's because a file has:

583

# no- check- code

584

# no- check- code

584

# but the reason to output skipping is to make life for

585

# but the reason to output skipping is to make life for

585

# tests easier. So, instead of writing it with a normal

586

# tests easier. So, instead of writing it with a normal

586

# spelling, we write it with the expected spelling from

587

# spelling, we write it with the expected spelling from

587

# tests/test-check-code.t

588

# tests/test-check-code.t

588

print("Skipping %s it has no-che?k-code (glob)" % f)

589

print("Skipping %s it has no-che?k-code (glob)" % f)

589

return "Skip" # skip checking this file

590

return "Skip" # skip checking this file

590

for p, r in filters:

591

for p, r in filters:

591

post = re.sub(p, r, post)

592

post = re.sub(p, r, post)

592

nerrs = len(pats[0]) # nerr elements are errors

593

nerrs = len(pats[0]) # nerr elements are errors

593

if warnings:

594

if warnings:

594

pats = pats[0] + pats[1]

595

pats = pats[0] + pats[1]

595

else:

596

else:

596

pats = pats[0]

597

pats = pats[0]

597

# print post # uncomment to show filtered version

598

# print post # uncomment to show filtered version

598

599

if debug:

600

if debug:

600

print("Checking %s for %s" % (name, f))

601

print("Checking %s for %s" % (name, f))

601

602

prelines = None

603

prelines = None

603

errors = []

604

errors = []

604

for i, pat in enumerate(pats):

605

for i, pat in enumerate(pats):

605

if len(pat) == 3:

606

if len(pat) == 3:

606

p, msg, ignore = pat

607

p, msg, ignore = pat

607

else:

608

else:

608

p, msg = pat

609

p, msg = pat

609

ignore = None

610

ignore = None

610

if i >= nerrs:

611

if i >= nerrs:

611

msg = "warning: " + msg

612

msg = "warning: " + msg

612

613

pos = 0

614

pos = 0

614

n = 0

615

n = 0

615

for m in p.finditer(post):

616

for m in p.finditer(post):

616

if prelines is None:

617

if prelines is None:

617

prelines = pre.splitlines()

618

prelines = pre.splitlines()

618

postlines = post.splitlines(True)

619

postlines = post.splitlines(True)

619

620

start = m.start()

621

start = m.start()

621

while n < len(postlines):

622

while n < len(postlines):

622

step = len(postlines[n])

623

step = len(postlines[n])

623

if pos + step > start:

624

if pos + step > start:

624

break

625

break

625

pos += step

626

pos += step

626

n += 1

627

n += 1

627

l = prelines[n]

628

l = prelines[n]

628

629

if ignore and re.search(ignore, l, re.MULTILINE):

630

if ignore and re.search(ignore, l, re.MULTILINE):

630

if debug:

631

if debug:

631

print("Skipping %s for %s:%s (ignore pattern)" % (

632

print("Skipping %s for %s:%s (ignore pattern)" % (

632

name, f, n))

633

name, f, n))

633

continue

634

continue

634

bd = ""

635

bd = ""

635

if blame:

636

if blame:

636

bd = 'working directory'

637

bd = 'working directory'

637

if not blamecache:

638

if not blamecache:

638

blamecache = getblame(f)

639

blamecache = getblame(f)

639

if n < len(blamecache):

640

if n < len(blamecache):

640

bl, bu, br = blamecache[n]

641

bl, bu, br = blamecache[n]

641

if bl == l:

642

if bl == l:

642

bd = '%s@%s' % (bu, br)

643

bd = '%s@%s' % (bu, br)

643

644

errors.append((f, lineno and n + 1, l, msg, bd))

645

errors.append((f, lineno and n + 1, l, msg, bd))

645

result = False

646

result = False

646

647

errors.sort()

648

errors.sort()

648

for e in errors:

649

for e in errors:

649

logfunc(*e)

650

logfunc(*e)

650

fc += 1

651

fc += 1

651

if maxerr and fc >= maxerr:

652

if maxerr and fc >= maxerr:

652

print(" (too many errors, giving up)")

653

print(" (too many errors, giving up)")

653

break

654

break

654

655

return result

656

return result

656

657

def main():

658

def main():

658

parser = optparse.OptionParser("%prog [options] [files]")

659

parser = optparse.OptionParser("%prog [options] [files]")

659

parser.add_option("-w", "--warnings", action="store_true",

660

parser.add_option("-w", "--warnings", action="store_true",

660

help="include warning-level checks")

661

help="include warning-level checks")

661

parser.add_option("-p", "--per-file", type="int",

662

parser.add_option("-p", "--per-file", type="int",

662

help="max warnings per file")

663

help="max warnings per file")

663

parser.add_option("-b", "--blame", action="store_true",

664

parser.add_option("-b", "--blame", action="store_true",

664

help="use annotate to generate blame info")

665

help="use annotate to generate blame info")

665

parser.add_option("", "--debug", action="store_true",

666

parser.add_option("", "--debug", action="store_true",

666

help="show debug information")

667

help="show debug information")

667

parser.add_option("", "--nolineno", action="store_false",

668

parser.add_option("", "--nolineno", action="store_false",

668

dest='lineno', help="don't show line numbers")

669

dest='lineno', help="don't show line numbers")

669

670

parser.set_defaults(per_file=15, warnings=False, blame=False, debug=False,

671

parser.set_defaults(per_file=15, warnings=False, blame=False, debug=False,

671

lineno=True)

672

lineno=True)

672

(options, args) = parser.parse_args()

673

(options, args) = parser.parse_args()

673

674

if len(args) == 0:

675

if len(args) == 0:

675

check = glob.glob("*")

676

check = glob.glob("*")

676

else:

677

else:

677

check = args

678

check = args

678

679

_preparepats()

680

_preparepats()

680

681

ret = 0

682

ret = 0

682

for f in check:

683

for f in check:

683

if not checkfile(f, maxerr=options.per_file, warnings=options.warnings,

684

if not checkfile(f, maxerr=options.per_file, warnings=options.warnings,

684

blame=options.blame, debug=options.debug,

685

blame=options.blame, debug=options.debug,

685

lineno=options.lineno):

686

lineno=options.lineno):

686

ret = 1

687

ret = 1

687

return ret

688

return ret

688

689

if __name__ == "__main__":

690

if __name__ == "__main__":

690

sys.exit(main())

691

sys.exit(main())

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             #!/usr/bin/env python
             #
             # check-code - a style and portability checker for Mercurial
             #
             # Copyright 2010 Matt Mackall <mpm@selenic.com>
             #
             # This software may be used and distributed according to the terms of the
             # GNU General Public License version 2 or any later version.
             """style and portability checker for Mercurial
             when a rule triggers wrong, do one of the following (prefer one from top):
              * do the work-around the rule suggests
              * doublecheck that it is a false match
              * improve the rule pattern
              * add an ignore pattern to the rule (3rd arg) which matches your good line
                (you can append a short comment and match this, like: #re-raises)
              * change the pattern to a warning and list the exception in test-check-code-hg
              * ONLY use no--check-code for skipping entire files from external sources
             """
             from __future__ import absolute_import, print_function
             import glob
             import keyword
             import optparse
             import os
             import re
             import sys
             if sys.version_info[0] < 3:
                 opentext = open
             else:
                 def opentext(f):
                     return open(f, encoding='ascii')
             try:
                 xrange
             except NameError:
                 xrange = range
             try:
                 import re2
             except ImportError:
                 re2 = None
             def compilere(pat, multiline=False):
                 if multiline:
                     pat = '(?m)' + pat
                 if re2:
                     try:
                         return re2.compile(pat)
                     except re2.error:
                         pass
                 return re.compile(pat)
             # check "rules depending on implementation of repquote()" in each
             # patterns (especially pypats), before changing around repquote()
             _repquotefixedmap = {' ': ' ', '\n': '\n', '.': 'p', ':': 'q',
                                  '%': '%', '\\': 'b', '*': 'A', '+': 'P', '-': 'M'}
             def _repquoteencodechr(i):
                 if i > 255:
                     return 'u'
                 c = chr(i)
                 if c in _repquotefixedmap:
                     return _repquotefixedmap[c]
                 if c.isalpha():
                     return 'x'
                 if c.isdigit():
                     return 'n'
                 return 'o'
             _repquotett = ''.join(_repquoteencodechr(i) for i in xrange(256))
             def repquote(m):
                 t = m.group('text')
                 t = t.translate(_repquotett)
                 return m.group('quote') + t + m.group('quote')
             def reppython(m):
                 comment = m.group('comment')
                 if comment:
                     l = len(comment.rstrip())
                     return "#" * l + comment[l:]
                 return repquote(m)
             def repcomment(m):
                 return m.group(1) + "#" * len(m.group(2))
             def repccomment(m):
                 t = re.sub(r"((?<=\n) )|\S", "x", m.group(2))
                 return m.group(1) + t + "*/"
             def repcallspaces(m):
                 t = re.sub(r"\n\s+", "\n", m.group(2))
                 return m.group(1) + t
             def repinclude(m):
                 return m.group(1) + "<foo>"
             def rephere(m):
                 t = re.sub(r"\S", "x", m.group(2))
                 return m.group(1) + t
             testpats = [
               [
                 (r'pushd|popd', "don't use 'pushd' or 'popd', use 'cd'"),
                 (r'\W\$?\(\([^\)\n]*\)\)', "don't use (()) or $(()), use 'expr'"),
                 (r'grep.*-q', "don't use 'grep -q', redirect to /dev/null"),
                 (r'(?<!hg )grep.* -a', "don't use 'grep -a', use in-line python"),
                 (r'sed.*-i', "don't use 'sed -i', use a temporary file"),
                 (r'\becho\b.*\\n', "don't use 'echo \\n', use printf"),
                 (r'echo -n', "don't use 'echo -n', use printf"),
                 (r'(^|\|\s*)\bwc\b[^|]*$\n(?!.*\(re\))', "filter wc output"),
                 (r'head -c', "don't use 'head -c', use 'dd'"),
                 (r'tail -n', "don't use the '-n' option to tail, just use '-<num>'"),
                 (r'sha1sum', "don't use sha1sum, use $TESTDIR/md5sum.py"),
                 (r'ls.*-\w*R', "don't use 'ls -R', use 'find'"),
                 (r'printf.*[^\\]\\([1-9]|0\d)', r"don't use 'printf \NNN', use Python"),
                 (r'printf.*[^\\]\\x', "don't use printf \\x, use Python"),
                 (r'\$\(.*\)', "don't use $(expr), use `expr`"),
                 (r'rm -rf \*', "don't use naked rm -rf, target a directory"),
                 (r'(^|\|\s*)grep (-\w\s+)*[^|]*[(|]\w',
                  "use egrep for extended grep syntax"),
                 (r'/bin/', "don't use explicit paths for tools"),
                 (r'[^\n]\Z', "no trailing newline"),
                 (r'export .*=', "don't export and assign at once"),
                 (r'^source\b', "don't use 'source', use '.'"),
                 (r'touch -d', "don't use 'touch -d', use 'touch -t' instead"),
                 (r'\bls +[^|\n-]+ +-', "options to 'ls' must come before filenames"),
                 (r'[^>\n]>\s*\$HGRCPATH', "don't overwrite $HGRCPATH, append to it"),
                 (r'^stop\(\)', "don't use 'stop' as a shell function name"),
                 (r'(\[|\btest\b).*-e ', "don't use 'test -e', use 'test -f'"),
                 (r'\[\[\s+[^\]]*\]\]', "don't use '[[ ]]', use '[ ]'"),
                 (r'^alias\b.*=', "don't use alias, use a function"),
                 (r'if\s*!', "don't use '!' to negate exit status"),
                 (r'/dev/u?random', "don't use entropy, use /dev/zero"),
                 (r'do\s*true;\s*done', "don't use true as loop body, use sleep 0"),
                 (r'^( *)\t', "don't use tabs to indent"),
                 (r'sed (-e )?\'(\d+|/[^/]*/)i(?!\\\n)',
                  "put a backslash-escaped newline after sed 'i' command"),
                 (r'^diff *-\w*[uU].*$\n(^  \$ |^$)', "prefix diff -u/-U with cmp"),
                 (r'^\s+(if)? diff *-\w*[uU]', "prefix diff -u/-U with cmp"),
                 (r'seq ', "don't use 'seq', use $TESTDIR/seq.py"),
                 (r'\butil\.Abort\b', "directly use error.Abort"),
                 (r'\|&', "don't use |&, use 2>&1"),
                 (r'\w =  +\w', "only one space after = allowed"),
                 (r'\bsed\b.*[^\\]\\n', "don't use 'sed ... \\n', use a \\ and a newline"),
                 (r'env.*-u', "don't use 'env -u VAR', use 'unset VAR'"),
                 (r'cp.* -r ', "don't use 'cp -r', use 'cp -R'"),
               ],
               # warnings
               [
                 (r'^function', "don't use 'function', use old style"),
                 (r'^diff.*-\w*N', "don't use 'diff -N'"),
                 (r'\$PWD|\${PWD}', "don't use $PWD, use `pwd`"),
                 (r'^([^"\'\n]|("[^"\n]*")|(\'[^\'\n]*\'))*\^', "^ must be quoted"),
                 (r'kill (`|\$\()', "don't use kill, use killdaemons.py")
               ]
             ]
             testfilters = [
                 (r"( *)(#([^\n]*\S)?)", repcomment),
                 (r"<<(\S+)((.|\n)*?\n\1)", rephere),
             ]
             winglobmsg = "use (glob) to match Windows paths too"
             uprefix = r"^  \$ "
             utestpats = [
               [
                 (r'^(\S.*||  [$>] \S.*)[ \t]\n', "trailing whitespace on non-output"),
                 (uprefix + r'.*\|\s*sed[^|>\n]*\n',
                  "use regex test output patterns instead of sed"),
                 (uprefix + r'(true|exit 0)', "explicit zero exit unnecessary"),
                 (uprefix + r'.*(?<!\[)\$\?', "explicit exit code checks unnecessary"),
                 (uprefix + r'.*\|\| echo.*(fail|error)',
                  "explicit exit code checks unnecessary"),
                 (uprefix + r'set -e', "don't use set -e"),
                 (uprefix + r'(\s|fi\b|done\b)', "use > for continued lines"),
                 (uprefix + r'.*:\.\S*/', "x:.y in a path does not work on msys, rewrite "
                  "as x://.y, or see `hg log -k msys` for alternatives", r'-\S+:\.|' #-Rxxx
                  '# no-msys'), # in test-pull.t which is skipped on windows
                 (r'^  saved backup bundle to \$TESTTMP.*\.hg$', winglobmsg),
                 (r'^  changeset .* references (corrupted|missing) \$TESTTMP/.*[^)]$',
                  winglobmsg),
                 (r'^  pulling from \$TESTTMP/.*[^)]$', winglobmsg,
                  '\$TESTTMP/unix-repo$'), # in test-issue1802.t which skipped on windows
                 (r'^  reverting (?!subrepo ).*/.*[^)]$', winglobmsg),
                 (r'^  cloning subrepo \S+/.*[^)]$', winglobmsg),
                 (r'^  pushing to \$TESTTMP/.*[^)]$', winglobmsg),
                 (r'^  pushing subrepo \S+/\S+ to.*[^)]$', winglobmsg),
                 (r'^  moving \S+/.*[^)]$', winglobmsg),
                 (r'^  no changes made to subrepo since.*/.*[^)]$', winglobmsg),
                 (r'^  .*: largefile \S+ not available from file:.*/.*[^)]$', winglobmsg),
                 (r'^  .*file://\$TESTTMP',
                  'write "file:/*/$TESTTMP" + (glob) to match on windows too'),
                 (r'^  [^$>].*27\.0\.0\.1.*[^)]$',
                  'use (glob) to match localhost IP on hosts without 127.0.0.1 too'),
                 (r'^  (cat|find): .*: No such file or directory',
                  'use test -f to test for file existence'),
                 (r'^  diff -[^ -]*p',
                  "don't use (external) diff with -p for portability"),
                 (r'^  [-+][-+][-+] .* [-+]0000 \(glob\)',
                  "glob timezone field in diff output for portability"),
                 (r'^  @@ -[0-9]+ [+][0-9]+,[0-9]+ @@',
                  "use '@@ -N* +N,n @@ (glob)' style chunk header for portability"),
                 (r'^  @@ -[0-9]+,[0-9]+ [+][0-9]+ @@',
                  "use '@@ -N,n +N* @@ (glob)' style chunk header for portability"),
                 (r'^  @@ -[0-9]+ [+][0-9]+ @@',
                  "use '@@ -N* +N* @@ (glob)' style chunk header for portability"),
                 (uprefix + r'hg( +-[^ ]+( +[^ ]+)?)* +extdiff'
                  r'( +(-[^ po-]+|--(?!program|option)[^ ]+|[^-][^ ]*))*$',
                  "use $RUNTESTDIR/pdiff via extdiff (or -o/-p for false-positives)"),
               ],
               # warnings
               [
                 (r'^  (?!.*127\.0\.0\.1)[^*?/\n]* \(glob\)$',
                  "glob match with no glob string (?, *, /, and 127.0.0.1)"),
               ]
             ]
             for i in [0, 1]:
                 for tp in testpats[i]:
                     p = tp[0]
                     m = tp[1]
                     if p.startswith(r'^'):
                         p = r"^  [$>] (%s)" % p[1:]
                     else:
                         p = r"^  [$>] .*(%s)" % p
                     utestpats[i].append((p, m) + tp[2:])
             utestfilters = [
                 (r"<<(\S+)((.|\n)*?\n  > \1)", rephere),
                 (r"( +)(#([^\n]*\S)?)", repcomment),
             ]
             pypats = [
               [
                 (r'^\s*def\s*\w+\s*\(.*,\s*\(',
                  "tuple parameter unpacking not available in Python 3+"),
                 (r'lambda\s*\(.*,.*\)',
                  "tuple parameter unpacking not available in Python 3+"),
                 (r'(?<!def)\s+(cmp)\(', "cmp is not available in Python 3+"),
                 (r'\breduce\s*\(.*', "reduce is not available in Python 3+"),
                 (r'\bdict\(.*=', 'dict() is different in Py2 and 3 and is slower than {}',
                  'dict-from-generator'),
                 (r'\.has_key\b', "dict.has_key is not available in Python 3+"),
                 (r'\s<>\s', '<> operator is not available in Python 3+, use !='),
                 (r'^\s*\t', "don't use tabs"),
                 (r'\S;\s*\n', "semicolon"),
                 (r'[^_]_\([ \t\n]*(?:"[^"]+"[ \t\n+]*)+%', "don't use % inside _()"),
                 (r"[^_]_\([ \t\n]*(?:'[^']+'[ \t\n+]*)+%", "don't use % inside _()"),
                 (r'(\w|\)),\w', "missing whitespace after ,"),
                 (r'(\w|\))[+/*\-<>]\w', "missing whitespace in expression"),
                 (r'^\s+(\w|\.)+=\w[^,()\n]*$', "missing whitespace in assignment"),
                 (r'\w\s=\s\s+\w', "gratuitous whitespace after ="),
                 (r'.{81}', "line too long"),
                 (r'[^\n]\Z', "no trailing newline"),
                 (r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),
             #    (r'^\s+[^_ \n][^_. \n]+_[^_\n]+\s*=',
             #     "don't use underbars in identifiers"),
                 (r'^\s+(self\.)?[A-za-z][a-z0-9]+[A-Z]\w* = ',
                  "don't use camelcase in identifiers"),
                 (r'^\s*(if|while|def|class|except|try)\s[^[\n]*:\s*[^\\n]#\s]+',
                  "linebreak after :"),
                 (r'class\s[^( \n]+:', "old-style class, use class foo(object)",
                  r'#.*old-style'),
                 (r'class\s[^( \n]+\(\):',
                  "class foo() creates old style object, use class foo(object)",
                  r'#.*old-style'),
                 (r'\b(%s)\(' % '|'.join(k for k in keyword.kwlist
                                         if k not in ('print', 'exec')),
                  "Python keyword is not a function"),
                 (r',]', "unneeded trailing ',' in list"),
             #    (r'class\s[A-Z][^\(]*\((?!Exception)',
             #     "don't capitalize non-exception classes"),
             #    (r'in range\(', "use xrange"),
             #    (r'^\s*print\s+', "avoid using print in core and extensions"),
                 (r'[\x80-\xff]', "non-ASCII character literal"),
                 (r'("\')\.format\(', "str.format() has no bytes counterpart, use %"),
                 (r'^\s*(%s)\s\s' % '|'.join(keyword.kwlist),
                  "gratuitous whitespace after Python keyword"),
                 (r'([\(\[][ \t]\S)|(\S[ \t][\)\]])', "gratuitous whitespace in () or []"),
             #    (r'\s\s=', "gratuitous whitespace before ="),
                 (r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',
                  "missing whitespace around operator"),
                 (r'[^>< ](\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\s',
                  "missing whitespace around operator"),
                 (r'\s(\+=|-=|!=|<>|<=|>=|<<=|>>=|%=)\S',
                  "missing whitespace around operator"),
                 (r'[^^+=*/!<>&| %-](\s=|=\s)[^= ]',
                  "wrong whitespace around ="),
                 (r'\([^()]*( =[^=]|[^<>!=]= )',
                  "no whitespace around = for named parameters"),
                 (r'raise Exception', "don't raise generic exceptions"),
                 (r'raise [^,(]+, (\([^\)]+\)|[^,\(\)]+)$',
                  "don't use old-style two-argument raise, use Exception(message)"),
                 (r' is\s+(not\s+)?["\'0-9-]', "object comparison with literal"),
                 (r' [=!]=\s+(True|False|None)',
                  "comparison with singleton, use 'is' or 'is not' instead"),
                 (r'^\s*(while|if) [01]:',
                  "use True/False for constant Boolean expression"),
                 (r'(?:(?<!def)\s+|\()hasattr\(',
                  'hasattr(foo, bar) is broken, use util.safehasattr(foo, bar) instead'),
                 (r'opener\([^)]*\).read\(',
                  "use opener.read() instead"),
                 (r'opener\([^)]*\).write\(',
                  "use opener.write() instead"),
                 (r'[\s\(](open|file)\([^)]*\)\.read\(',
                  "use util.readfile() instead"),
                 (r'[\s\(](open|file)\([^)]*\)\.write\(',
                  "use util.writefile() instead"),
                 (r'^[\s\(]*(open(er)?|file)\([^)]*\)',
                  "always assign an opened file to a variable, and close it afterwards"),
                 (r'[\s\(](open|file)\([^)]*\)\.',
                  "always assign an opened file to a variable, and close it afterwards"),
                 (r'(?i)descend[e]nt', "the proper spelling is descendAnt"),
                 (r'\.debug\(\_', "don't mark debug messages for translation"),
                 (r'\.strip\(\)\.split\(\)', "no need to strip before splitting"),
                 (r'^\s*except\s*:', "naked except clause", r'#.*re-raises'),
                 (r'^\s*except\s([^\(,]+|\([^\)]+\))\s*,',
                  'legacy exception syntax; use "as" instead of ","'),
                 (r':\n(    )*( ){1,3}[^ ]', "must indent 4 spaces"),
                 (r'release\(.*wlock, .*lock\)', "wrong lock release order"),
                 (r'\b__bool__\b', "__bool__ should be __nonzero__ in Python 2"),
                 (r'os\.path\.join\(.*, *(""|\'\')\)',
                  "use pathutil.normasprefix(path) instead of os.path.join(path, '')"),
                 (r'\s0[0-7]+\b', 'legacy octal syntax; use "0o" prefix instead of "0"'),
                 # XXX only catch mutable arguments on the first line of the definition
                 (r'def.*[( ]\w+=\{\}', "don't use mutable default arguments"),
                 (r'\butil\.Abort\b', "directly use error.Abort"),
+                (r'^@(\w*\.)?cachefunc', "module-level @cachefunc is risky, please avoid"),
                 (r'^import Queue', "don't use Queue, use util.queue + util.empty"),
                 (r'^import cStringIO', "don't use cStringIO.StringIO, use util.stringio"),
                 (r'^import urllib', "don't use urllib, use util.urlreq/util.urlerr"),
                 (r'^import SocketServer', "don't use SockerServer, use util.socketserver"),
                 (r'^import urlparse', "don't use urlparse, use util.urlparse"),
                 (r'^import xmlrpclib', "don't use xmlrpclib, use util.xmlrpclib"),
                 (r'^import cPickle', "don't use cPickle, use util.pickle"),
                 (r'^import pickle', "don't use pickle, use util.pickle"),
                 (r'^import httplib', "don't use httplib, use util.httplib"),
                 (r'^import BaseHTTPServer', "use util.httpserver instead"),
                 (r'\.next\(\)', "don't use .next(), use next(...)"),
                 # rules depending on implementation of repquote()
                 (r' x+[xpqo%APM][\'"]\n\s+[\'"]x',
                  'string join across lines with no space'),
                 (r'''(?x)ui\.(status|progress|write|note|warn)\(
                      [ \t\n#]*
                      (?# any strings/comments might precede a string, which
                        # contains translatable message)
                      ((['"]|\'\'\'|""")[ \npq%bAPMxno]*(['"]|\'\'\'|""")[ \t\n#]+)*
                      (?# sequence consisting of below might precede translatable message
                        # - formatting string: "% 10s", "%05d", "% -3.2f", "%*s", "%%" ...
                        # - escaped character: "\\", "\n", "\0" ...
                        # - character other than '%', 'b' as '\', and 'x' as alphabet)
                      (['"]|\'\'\'|""")
                      ((%([ n]?[PM]?([np]+|A))?x)|%%|b[bnx]|[ \nnpqAPMo])*x
                      (?# this regexp can't use [^...] style,
                        # because _preparepats forcibly adds "\n" into [^...],
                        # even though this regexp wants match it against "\n")''',
                  "missing _() in ui message (use () to hide false-positives)"),
               ],
               # warnings
               [
                 # rules depending on implementation of repquote()
                 (r'(^| )pp +xxxxqq[ \n][^\n]', "add two newlines after '.. note::'"),
               ]
             ]
             pyfilters = [
                 (r"""(?msx)(?P<comment>\#.*?$)|
                      ((?P<quote>('''|\"\"\"|(?<!')'(?!')|(?<!")"(?!")))
                       (?P<text>(([^\\]|\\.)*?))
                       (?P=quote))""", reppython),
             ]
             txtfilters = []
             txtpats = [
               [
                 ('\s$', 'trailing whitespace'),
                 ('.. note::[ \n][^\n]', 'add two newlines after note::')
               ],
               []
             ]
             cpats = [
               [
                 (r'//', "don't use //-style comments"),
                 (r'^  ', "don't use spaces to indent"),
                 (r'\S\t', "don't use tabs except for indent"),
                 (r'(\S[ \t]+|^[ \t]+)\n', "trailing whitespace"),
                 (r'.{81}', "line too long"),
                 (r'(while|if|do|for)\(', "use space after while/if/do/for"),
                 (r'return\(', "return is not a function"),
                 (r' ;', "no space before ;"),
                 (r'[^;] \)', "no space before )"),
                 (r'[)][{]', "space between ) and {"),
                 (r'\w+\* \w+', "use int *foo, not int* foo"),
                 (r'\W\([^\)]+\) \w+', "use (int)foo, not (int) foo"),
                 (r'\w+ (\+\+|--)', "use foo++, not foo ++"),
                 (r'\w,\w', "missing whitespace after ,"),
                 (r'^[^#]\w[+/*]\w', "missing whitespace in expression"),
                 (r'\w\s=\s\s+\w', "gratuitous whitespace after ="),
                 (r'^#\s+\w', "use #foo, not # foo"),
                 (r'[^\n]\Z', "no trailing newline"),
                 (r'^\s*#import\b', "use only #include in standard C code"),
                 (r'strcpy\(', "don't use strcpy, use strlcpy or memcpy"),
                 (r'strcat\(', "don't use strcat"),
                 # rules depending on implementation of repquote()
               ],
               # warnings
               [
                 # rules depending on implementation of repquote()
               ]
             ]
             cfilters = [
                 (r'(/\*)(((\*(?!/))|[^*])*)\*/', repccomment),
                 (r'''(?P<quote>(?<!")")(?P<text>([^"]|\\")+)"(?!")''', repquote),
                 (r'''(#\s*include\s+<)([^>]+)>''', repinclude),
                 (r'(\()([^)]+\))', repcallspaces),
             ]
             inutilpats = [
               [
                 (r'\bui\.', "don't use ui in util"),
               ],
               # warnings
               []
             ]
             inrevlogpats = [
               [
                 (r'\brepo\.', "don't use repo in revlog"),
               ],
               # warnings
               []
             ]
             webtemplatefilters = []
             webtemplatepats = [
               [],
               [
                 (r'{desc(\|(?!websub|firstline)[^\|]*)+}',
                  'follow desc keyword with either firstline or websub'),
               ]
             ]
             allfilesfilters = []
             allfilespats = [
               [
                 (r'(http|https)://[a-zA-Z0-9./]*selenic.com/',
                  'use mercurial-scm.org domain URL'),
               ],
               # warnings
               [],
             ]
             py3pats = [
               [
                 (r'os\.environ', "use encoding.environ instead (py3)"),
                 (r'os\.name', "use pycompat.osname instead (py3)"),
                 (r'os\.getcwd', "use pycompat.getcwd instead (py3)"),
                 (r'os\.sep', "use pycompat.ossep instead (py3)"),
                 (r'os\.pathsep', "use pycompat.ospathsep instead (py3)"),
                 (r'os\.altsep', "use pycompat.osaltsep instead (py3)"),
                 (r'os\.getenv', "use pycompat.osgetenv instead (py3)"),
                 (r'sys\.platform', "use pycompat.sysplatform instead (py3)"),
                 (r'getopt\.getopt', "use pycompat.getoptb instead (py3)"),
               ],
               # warnings
               [],
             ]
             checks = [
                 ('python', r'.*\.(py|cgi)$', r'^#!.*python', pyfilters, pypats),
                 ('python 3', r'.*(hgext|mercurial).*(?<!pycompat)\.py', '',
                         pyfilters, py3pats),
                 ('test script', r'(.*/)?test-[^.~]*$', '', testfilters, testpats),
                 ('c', r'.*\.[ch]$', '', cfilters, cpats),
                 ('unified test', r'.*\.t$', '', utestfilters, utestpats),
                 ('layering violation repo in revlog', r'mercurial/revlog\.py', '',
                  pyfilters, inrevlogpats),
                 ('layering violation ui in util', r'mercurial/util\.py', '', pyfilters,
                  inutilpats),
                 ('txt', r'.*\.txt$', '', txtfilters, txtpats),
                 ('web template', r'mercurial/templates/.*\.tmpl', '',
                  webtemplatefilters, webtemplatepats),
                 ('all except for .po', r'.*(?<!\.po)$', '',
                  allfilesfilters, allfilespats),
             ]
             def _preparepats():
                 for c in checks:
                     failandwarn = c[-1]
                     for pats in failandwarn:
                         for i, pseq in enumerate(pats):
                             # fix-up regexes for multi-line searches
                             p = pseq[0]
                             # \s doesn't match \n
                             p = re.sub(r'(?<!\\)\\s', r'[ \\t]', p)
                             # [^...] doesn't match newline
                             p = re.sub(r'(?<!\\)\[\^', r'[^\\n', p)
                             pats[i] = (re.compile(p, re.MULTILINE),) + pseq[1:]
                     filters = c[3]
                     for i, flt in enumerate(filters):
                         filters[i] = re.compile(flt[0]), flt[1]
             class norepeatlogger(object):
                 def __init__(self):
                     self._lastseen = None
                 def log(self, fname, lineno, line, msg, blame):
                     """print error related a to given line of a given file.
                     The faulty line will also be printed but only once in the case
                     of multiple errors.
                     :fname: filename
                     :lineno: line number
                     :line: actual content of the line
                     :msg: error message
                     """
                     msgid = fname, lineno, line
                     if msgid != self._lastseen:
                         if blame:
                             print("%s:%d (%s):" % (fname, lineno, blame))
                         else:
                             print("%s:%d:" % (fname, lineno))
                         print(" > %s" % line)
                         self._lastseen = msgid
                     print(" " + msg)
             _defaultlogger = norepeatlogger()
             def getblame(f):
                 lines = []
                 for l in os.popen('hg annotate -un %s' % f):
                     start, line = l.split(':', 1)
                     user, rev = start.split()
                     lines.append((line[1:-1], user, rev))
                 return lines
             def checkfile(f, logfunc=_defaultlogger.log, maxerr=None, warnings=False,
                           blame=False, debug=False, lineno=True):
                 """checks style and portability of a given file
                 :f: filepath
                 :logfunc: function used to report error
                           logfunc(filename, linenumber, linecontent, errormessage)
                 :maxerr: number of error to display before aborting.
                          Set to false (default) to report all errors
                 return True if no error is found, False otherwise.
                 """
                 blamecache = None
                 result = True
                 try:
                     with opentext(f) as fp:
                         try:
                             pre = post = fp.read()
                         except UnicodeDecodeError as e:
                             print("%s while reading %s" % (e, f))
                             return result
                 except IOError as e:
                     print("Skipping %s, %s" % (f, str(e).split(':', 1)[0]))
                     return result
                 for name, match, magic, filters, pats in checks:
                     post = pre # discard filtering result of previous check
                     if debug:
                         print(name, f)
                     fc = 0
                     if not (re.match(match, f) or (magic and re.search(magic, pre))):
                         if debug:
                             print("Skipping %s for %s it doesn't match %s" % (
                                    name, match, f))
                         continue
                     if "no-" "check-code" in pre:
                         # If you're looking at this line, it's because a file has:
                         # no- check- code
                         # but the reason to output skipping is to make life for
                         # tests easier. So, instead of writing it with a normal
                         # spelling, we write it with the expected spelling from
                         # tests/test-check-code.t
                         print("Skipping %s it has no-che?k-code (glob)" % f)
                         return "Skip" # skip checking this file
                     for p, r in filters:
                         post = re.sub(p, r, post)
                     nerrs = len(pats[0]) # nerr elements are errors
                     if warnings:
                         pats = pats[0] + pats[1]
                     else:
                         pats = pats[0]
                     # print post # uncomment to show filtered version
                     if debug:
                         print("Checking %s for %s" % (name, f))
                     prelines = None
                     errors = []
                     for i, pat in enumerate(pats):
                         if len(pat) == 3:
                             p, msg, ignore = pat
                         else:
                             p, msg = pat
                             ignore = None
                         if i >= nerrs:
                             msg = "warning: " + msg
                         pos = 0
                         n = 0
                         for m in p.finditer(post):
                             if prelines is None:
                                 prelines = pre.splitlines()
                                 postlines = post.splitlines(True)
                             start = m.start()
                             while n < len(postlines):
                                 step = len(postlines[n])
                                 if pos + step > start:
                                     break
                                 pos += step
                                 n += 1
                             l = prelines[n]
                             if ignore and re.search(ignore, l, re.MULTILINE):
                                 if debug:
                                     print("Skipping %s for %s:%s (ignore pattern)" % (
                                         name, f, n))
                                 continue
                             bd = ""
                             if blame:
                                 bd = 'working directory'
                                 if not blamecache:
                                     blamecache = getblame(f)
                                 if n < len(blamecache):
                                     bl, bu, br = blamecache[n]
                                     if bl == l:
                                         bd = '%s@%s' % (bu, br)
                             errors.append((f, lineno and n + 1, l, msg, bd))
                             result = False
                     errors.sort()
                     for e in errors:
                         logfunc(*e)
                         fc += 1
                         if maxerr and fc >= maxerr:
                             print(" (too many errors, giving up)")
                             break
                 return result
             def main():
                 parser = optparse.OptionParser("%prog [options] [files]")
                 parser.add_option("-w", "--warnings", action="store_true",
                                   help="include warning-level checks")
                 parser.add_option("-p", "--per-file", type="int",
                                   help="max warnings per file")
                 parser.add_option("-b", "--blame", action="store_true",
                                   help="use annotate to generate blame info")
                 parser.add_option("", "--debug", action="store_true",
                                   help="show debug information")
                 parser.add_option("", "--nolineno", action="store_false",
                                   dest='lineno', help="don't show line numbers")
                 parser.set_defaults(per_file=15, warnings=False, blame=False, debug=False,
                                     lineno=True)
                 (options, args) = parser.parse_args()
                 if len(args) == 0:
                     check = glob.glob("*")
                 else:
                     check = args
                 _preparepats()
                 ret = 0
                 for f in check:
                     if not checkfile(f, maxerr=options.per_file, warnings=options.warnings,
                                      blame=options.blame, debug=options.debug,
                                      lineno=options.lineno):
                         ret = 1
                 return ret
             if __name__ == "__main__":
                 sys.exit(main())